Relay Tester Kit 12v Car Relay Tester Automotive Diagnostic Tools Electronic Universal For Cars Battery Checker Alternator Analy
ID: 51334

Relay Tester Kit 12v Car Relay Tester Automotive Diagnostic Tools Electronic Universal For Cars Battery Checker Alternator Analy

4.8 (91 votes) | 249 orders
Price: US $17.55 - 47.31 / piece
Discount Price:
US $ 11.41 - 30.74 / piece
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12V Car Electronic Automotive Relay Tester Universal For Cars Auto Battery Checker

The importance of relay tester

Most car lights, wipers, starters, air conditioners, electric seats, electric doors and windows, anti-lock brakes, and audio all use relays. Automotive relays suffer from vibration, high temperature, low temperature, humidity, etc., which will reduce their life. But once the relay fails, it will immediately cause the paralysis of the system components, and even cause the entire vehicle to be unusable. Therefore, it is very important to regularly check the relays inside the car. Tester will check for proper functioning of the relay contacts by connecting the car battery (11V--15V) to the relay coil.


Automotive relays test tool.

1.Through the continuous automobile battery (11V-15V) to the relay coil, the detector can properly check the relay contact function.

2. The tester observes contact data, closure time, relay inertia at each test stage, etc.

3. Test to properly control the opening and closing of the relay.

4. If the relay is abnormal the red LED will light, it's normal the green LED will light.

5. Fine workmanship and good performance.

6. Easy to operate.

7. Convenient to carry.

8. Durable in use.


Material: Plastic & Metal

Color: Black & Red

Voltage: 12V

Size: approx. 110 * 60 * 28mm

product name:automotive relay tester

1 x 12V Relay Tester

Five High Advantages

1.Safety and environmental protection
2.Good durability
4.Strong temperature resistance
5.Lightweight and generous


Car battery must be 12V battery, the voltage must be between 11-15V. The coil resistance is preferably at least 20 ohms.

Please allow 0-1 cm errors due to manual measurement.

How to use the tool?

The Steps are as Follows

1. Connect the power leads to the car battery --black alligator clip to negative terminal, red alligator clip to positive terminal.
2. Tester is powered up when the LED illuminates in RED.
3. Check the relay before plugging into the tester. If it's a 4 pin relay,select"4 pin" on the tester.If it's a 5 pin relay, select"5 pin"on the tester.
4. Plug in the relay into one of the three receptacles.
5. Press the "TEST" button.
6. Tester will check the pin configuration of the unknown relay. Tester will light the RED LED if the unkonwn relay is not the same to the most of common automotive relaysor the pin of the unknown relay is destroyed.
7.Tester will open and close the relay 10 times for testing the time to contacts closure and opening if the pin configuration of the relay is right. Tester will light the RED LED immediately if the time is overtime.
8. Tester will check the consistency of the relay after testing the time to contacts closure and opening ten times. Tester will light the GREEN LED if the test passed, if not light the RED LED.
9. Disconnect power leads from the car battery and remove relay from the tester.

It can quickly detect whether the relay is normal or not. When using a simple test, it needs to be connected to the car's 11V-15V battery. The tester will automatically detect the pin position, the release time of the action and the consistency of the relay in each test stage.
If the tester lights up in green, it means the relay is normal, and lights in red means it’s not normal.

Insulation material, fine workmanship

Seamless docking, more solid. More robust and durable, long service life


Insulation material to ensure safety, good occlusion, more accurate test results

Long cable

1 meter extension cord is more convenient to use


Seamless butt joint, stronger and longer service life, strong and durable


4PIN/5PIN switch, TEST is the first button

Insulation material, fine workmanship

Seamless docking, more solid. More robust and durable, long service life

Package included:

1 x 12V Relay Tester(option of bag)

  • Brand Name: NEXPEAK
  • Origin: CN(Origin)


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some location we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:

Location *Estimated Shipping Time
United States 10-30 Business days
Canada, Europe 10-30 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, if you’d like a refund you can request one no matter the reason.

If you did not receive the product within the guaranteed time(45 days not including 2-5 day processing) you can request a refund or a reshipment.

If you received the wrong item you can request a refund or a reshipment.

If you do not want the product you’ve receive you may request a refund but you must return the item at your expense and the item must be unused.

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of Sinaparts - Automobile & Motorcycle Parts (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.



Thank you for your interest doing business with us!

If you would like to get a discounted price for your large purchase orders, fill in the required blanks along with your email address, the product Item ID # and/or the link of the item that you want to order, item quantity (minimum of 30 pieces), shipping country and payment method is required. We will contact you with a discounted price as soon as we receive your inquiry.

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